Oh I got so many,
like the time where I went to a consult, and i show up to this barn in the middle of nowhere, walk into this trash heap, looking for the “lab” and theres like broken down cars and semi trucks and farm equipment all over the place, reeked of animal urine, I search around this place and finally find someone, he leads to to this tiny room wheres theres 4 good old boys smoking cigarettes in front of the their FFE, place reeked of cig smoke and solvent, zero ventilation, IBC totes of solvent all over the place. I was a little shocked at the disregard of both safety and hygiene. Tried talking sense into them, told em to get ventilation and not to smoke 5 feet from the FFE and literal wall of solvents, but na their practices were perfectly safe in their minds. I got their wiper online and got the fuck outa there, they wanted me back to train them how to crystallize CBD and I asked them of they installed ventilation, of course they didnt, I got busy and didnt consult for them. Never heard if they had a fire, but wouldnt surprise me of they did, I’ve seen some unsafe spots, but that took the Darwin award forsure.
One time I had to do a bunch of LLEs with pentane, only had a 5L sep funnel available at the time, i got the brilliant idea of riging the sep funnel so i could pull a vaccum and pull in my solutions without having to pour. Was a sketchy rig, literally had to stop myself from continuing trying that because it was fuckjng sketch, litterally realized what i was doing, this was shitty Chinese glass too, it probably would of been fine, but i sensed the danger and reapproached the problem. Moral is, if your gut tells you something is unsafe, fucking listen to it.
In the early days I only had one chemical rated diaphragm pump, and I would use harbor freight pumps on literally everything, on the rotovaps everything, I was usually good about changing the oil daily, some times tho when I’d change the oil, there wouldnt be any oil left and it was all solvent 
someone must of been looking out for me.
Had a fire once, was cleaning the floors, had a big puddle of etoh on the floor to get all the oil drops and whatnot, not sure what happened but it ignited was prolly a static discharge or something, the puddle was prolly 2 feet across, next thing I know ny shoes on fire, so I grabbed the fire extinguisher off the wall and blew it out, no damage, nothing happened, I handled it, but that experience made me much much safer in general made me respect the outcomes much much more, put hair on my chest forsure.
I’m so full of stories, I’ve consulted in some crazy labs, I’m never surprised anymore, always give my best effort to set people on the safest possible paths, but chad owners never give a fuck.